Embox 0.5.7
Embox 0.5.7

* Improved E2k support
* Started port Rust language
* Improved pthread and signals
* Improved dev_conf
* Added motor driver API
* Improved math lib
* Improve build system
* a lot of fixes and improvements

embox/embox,embox/embox,embox/embox,embox/embox,embox/embox,embox/embox